DC Machine

What is DC machine?

• Consist of DC motor and generator

• DC motor

• DC generator

• Use AC for incoming supply

Define a commutator?

• to connect generated voltage with external circuit

• to produced magnetic field

• to generate electricity

• to link loop with brusheh

Conversion from mechanical energy to electrical energy is also defined as what?

• a motor

• a generator

• a series motor

• a shunt motor

A _____ is induced in armature conductors when current carrying conductors are placed in a magnetic field

To determine the direction of the induced EMF/current of a conductor moving a magnetic field.

• Kirchhoff's law

• Maxwell's rule

• Fleming's rule

• Ohm's law

The magnitude of the induced EMF depends on?

• The strength of the magnetic field

• The angle at which the conductor cuts the magnetic field

• The speed at which the conductor is moved

• The length of the conductor within the magnetic field

DC machine consists of?

• Permanent magnet

• Electromagnet

• Shunt motor

• Permanent & Electromagnet

Electromagnet consist of?

• Separately excited

• Self-excited

• Separately & self-excited

• Compound

Self-excited motor consist of?

• Series & Shunt

• Shunt & Compound

• Series, shunt, & compound

• Separately

____ magnetic flux is derived from a separate power source independent of the generator itself.